* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --bg-color: #fafafa;
    --text-color: #2c2c2c;
    --header-bg: #fafafa;
    --panel-bg: #fafafa;
    --border-color: #d4d4d4;
    --primary-color: #1a1a1a;
    --editor-bg: #fafafa;
    --output-bg: #fafafa;
    --output-text: #2c2c2c;
    --button-bg: #fafafa;
    --button-hover-bg: #f0f0f0;
    --button-active-bg: #e8e8e8;
    --input-bg: #fafafa;
}

[data-theme="dark"] {
    --bg-color: #1a1a1a;
    --text-color: #e0e0e0;
    --header-bg: #1a1a1a;
    --panel-bg: #1a1a1a;
    --border-color: #333333;
    --primary-color: #ffffff;
    --editor-bg: #1a1a1a;
    --output-bg: #1a1a1a;
    --output-text: #e0e0e0;
    --button-bg: #1a1a1a;
    --button-hover-bg: #2a2a2a;
    --button-active-bg: #3a3a3a;
    --input-bg: #1a1a1a;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    background-color: var(--bg-color);
    color: var(--text-color);
    height: 100vh;
    display: flex;
    flex-direction: column;
}

.header {
    background-color: var(--header-bg);
    padding: 20px;
    text-align: center;
    border-bottom: 1px solid var(--border-color);
    position: relative;
}

.header h1 {
    color: var(--primary-color);
    font-size: 20px;
    font-weight: 400;
    margin: 0;
}

.header-buttons {
    position: absolute;
    top: 50%;
    right: 20px;
    transform: translateY(-50%);
    display: flex;
    gap: 8px;
}

.theme-toggle, .help-button, .github-link {
    background: var(--button-bg);
    color: var(--text-color);
    border: 1px solid var(--border-color);
    padding: 6px 12px;
    border-radius: 2px;
    cursor: pointer;
    font-size: 13px;
    font-weight: 400;
    transition: all 0.2s ease;
    text-decoration: none;
    display: inline-block;
}

.theme-toggle:hover, .help-button:hover, .github-link:hover {
    background: var(--button-hover-bg);
}

.help-button {
    background: var(--button-bg);
    color: var(--text-color);
}

.help-button:hover {
    background: var(--button-hover-bg);
}

.container {
    display: flex;
    flex: 1;
    height: calc(100vh - 80px);
    width: 100%;
    overflow: hidden;
}

.editor-panel {
    flex: 1;
    display: flex;
    flex-direction: column;
    border-right: 2px solid #3e3e42;
    min-width: 0;
}

.output-panel {
    flex: 1;
    display: flex;
    flex-direction: column;
    min-width: 0;
}

.panel-header {
    background-color: var(--panel-bg);
    padding: 12px 20px;
    border-bottom: 1px solid var(--border-color);
    font-weight: 400;
    font-size: 14px;
    color: var(--text-color);
}

.editor {
    flex: 1;
    background-color: var(--editor-bg);
    color: var(--text-color);
    border: none;
    padding: 20px;
    font-family: 'SF Mono', Monaco, 'Cascadia Code', 'Roboto Mono', Consolas, 'Courier New', monospace;
    font-size: 14px;
    line-height: 1.6;
    resize: none;
    outline: none;
}

.output {
    flex: 1;
    background-color: var(--output-bg);
    color: var(--output-text);
    padding: 20px;
    font-family: 'SF Mono', Monaco, 'Cascadia Code', 'Roboto Mono', Consolas, 'Courier New', monospace;
    font-size: 14px;
    line-height: 1.6;
    overflow-y: auto;
    overflow-x: hidden;
    white-space: pre-wrap;
    word-wrap: break-word;
    overflow-wrap: break-word;
    width: 100%;
    min-width: 0;
}

.controls {
    background-color: var(--panel-bg);
    padding: 12px 20px;
    border-top: 1px solid var(--border-color);
    display: flex;
    gap: 8px;
}

.btn {
    background-color: var(--button-bg);
    color: var(--text-color);
    border: 1px solid var(--border-color);
    padding: 6px 12px;
    border-radius: 2px;
    cursor: pointer;
    font-family: inherit;
    font-size: 13px;
    font-weight: 400;
    transition: all 0.2s ease;
}

.btn:hover {
    background-color: var(--button-hover-bg);
}

.btn:active {
    background-color: var(--button-active-bg);
}

.btn.clear {
    background-color: var(--button-bg);
    color: var(--text-color);
}

.btn.clear:hover {
    background-color: var(--button-hover-bg);
}

.output[contenteditable="true"] {
    cursor: text;
}

.output[contenteditable="true"]:focus {
    outline: 2px solid var(--primary-color);
    outline-offset: -2px;
}

.input-prompt {
    color: var(--primary-color);
    font-weight: 400;
}

.modal {
    display: none;
    position: fixed;
    z-index: 1000;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.5);
}

.modal-content {
    background-color: var(--bg-color);
    margin: 5% auto;
    padding: 30px;
    border: 1px solid var(--border-color);
    border-radius: 4px;
    width: 90%;
    max-width: 800px;
    max-height: 80vh;
    overflow-y: auto;
    position: relative;
    scrollbar-width: none;
    -ms-overflow-style: none;
}

.modal-content::-webkit-scrollbar {
    display: none;
}

.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 24px;
    padding-bottom: 12px;
    border-bottom: 1px solid var(--border-color);
}

.modal-title {
    color: var(--primary-color);
    font-size: 18px;
    font-weight: 400;
}

.close {
    color: var(--text-color);
    font-size: 24px;
    font-weight: 300;
    cursor: pointer;
    transition: color 0.2s ease;
}

.close:hover {
    color: var(--primary-color);
}

.modal-body {
    color: var(--text-color);
    line-height: 1.6;
}

.modal-body h3 {
    color: var(--primary-color);
    margin-top: 24px;
    margin-bottom: 12px;
    font-size: 16px;
    font-weight: 400;
}

.modal-body h4 {
    color: var(--text-color);
    margin-top: 16px;
    margin-bottom: 8px;
    font-size: 14px;
    font-weight: 400;
}

.modal-body code {
    background-color: var(--editor-bg);
    color: var(--primary-color);
    padding: 2px 4px;
    border-radius: 2px;
    font-family: 'SF Mono', Monaco, 'Cascadia Code', 'Roboto Mono', Consolas, 'Courier New', monospace;
}

.modal-body pre {
    background-color: var(--editor-bg);
    color: var(--text-color);
    padding: 16px;
    border-radius: 4px;
    overflow-x: auto;
    font-family: 'SF Mono', Monaco, 'Cascadia Code', 'Roboto Mono', Consolas, 'Courier New', monospace;
    font-size: 13px;
    margin: 12px 0;
    border: 1px solid var(--border-color);
}

.command-table {
    width: 100%;
    border-collapse: collapse;
    margin: 16px 0;
}

.command-table th,
.command-table td {
    border: 1px solid var(--border-color);
    padding: 8px 12px;
    text-align: left;
}

.command-table th {
    background-color: var(--panel-bg);
    color: var(--primary-color);
    font-weight: 400;
    font-size: 13px;
}

.command-table td {
    font-size: 13px;
}

.command-table code {
    background-color: transparent;
    color: var(--primary-color);
    font-weight: 400;
}